Grabbing hold of momentum midway through the fourth set, McMaster carried it all the way to a come-from-behind, five-set victory in Windsor Saturday.
The Marauders overhauled a 2-1 deficit through three sets to hand the Lancers a 25-22, 16-25, 22-25, 25-16, 15-9 defeat, and improve to 3-1 in OUA play.
With the result, McMaster kept hold of second spot in the OUA West division, with a match against the division-leading Western Mustangs looming Sunday in London.
The duo of middle Maicee Sorensen and opposite Rachel Woock posted identical totals of 14 kills to lead the Marauders offensively, with Sorensen adding three aces for a match high of 17 points. Woock had an ace and a solo block to her name Saturday, ending the marathon afternoon with 16 points.
Hailey Kranics shone on the block, with four solos and two assists to go along with eight kills, for a total of 13 points.
McMaster's veteran setter Caitlin Genovy led the match with 46 assists over five sets of work, while libero Carly Heath similarly posted a match high with 20 digs.
NEXT UP: The Marauders travel to London to take on the unbeaten Western Mustangs in a rematch of the 2017 OUA final. First serve is scheduled for 2:00 p.m.